Circuit interrupter for a galvanic cell

Details Circuit interrupter for a galvanic cell Circuit interrupter for a galvanic cell

1989-10-06

1991-10-15

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

With control means responsive to battery condition sensing...

429 57, H01M 200

Patent

active

050573829

ABSTRACT:
A galvanic cell with a circuit interrupter to protect the cell from excessive current flow. The circuit interrupter is mounted on one end of the metal container which holds the electrodes and electrolyte making up the galvanic cell. The metal container is in electrical contact with one of the electrodes. One part of the circuit interrupter is adhered to the end of the galvanic cell by a layer of adhesive. This part is also in contact with the container and forms an external terminal for the galvanic cell. The part can be of annular configuration and provide a central aperture for access to the other external terminal or to a port used to fill the galvanic cell with electrolyte. In operation, excessive electrical current will cause the end of the cell to bulge, breaking the electrical contact between the external terminal and the container, effectively electrically isolating the container from that external terminal.

REFERENCES:
patent: 4690879 (1987-09-01), Huhndorff et al.
patent: 4756983 (1988-07-01), Tucholski
patent: 4788112 (1988-11-01), Kung
patent: 4818641 (1989-04-01), Ledenican
patent: 4855195 (1989-08-01), Georgopoulos et al.

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